Loma Prieta is a mountain peak in Santa Clara County, California at about 1,148 m (3,766 ft) above sea level. The nearest town is Day Valley, about 8.5 km (5.3 mi) away (Loma Prieta lies N of town).
Loma Prieta (Spanish for "Black Hill") is the highest peak in the Santa Cruz Mountains in Northern California, measuring 3,790 feet (1,160 m) in height. Although the 1989 Loma Prieta earthquake was named for this mountain, the actual epicenter was five miles southwest of the peak, across the San Andreas Fault, in The Forest of Nisene Marks State Park. In the 19th century, the peak was called Mount Bache, a name given in honor of Alexander Dallas Bache; the name is no longer in use. From 1955 to 2005, the mountain was the longtime site for the transmitter tower of San Jose television station KNTV. In September 2005, it moved its transmitter 83 kilometres (52 mi) northwest to San Bruno Mountain after it became the Bay Area's NBC affiliate.From the Wikipedia article “Loma Prieta”, licensed under CC BY-SA 4.0.
Sunrise & sunset directions
At Loma Prieta the sunrise point swings a long way through the year: about 60° (ENE) at the June solstice and 119° (ESE) in late December. Sunset moves from 301° (WNW) in June to 241° (WSW) in December, and the midday sun climbs to 76° in summer but only 29° in winter.
| Date | Sunrise | Azimuth | Sunset | Azimuth | Noon sun | Daylight |
|---|---|---|---|---|---|---|
| March equinox (Mar 20) | 7:12 AM | 90° E | 7:20 PM | 271° W | 53° | 12h 08m |
| June solstice (Jun 21) | 5:48 AM | 60° ENE | 8:31 PM | 301° WNW | 76° | 14h 43m |
| September equinox (Sep 22) | 6:56 AM | 89° E | 7:06 PM | 271° W | 53° | 12h 10m |
| December solstice (Dec 21) | 7:18 AM | 119° ESE | 4:54 PM | 241° WSW | 29° | 9h 36m |
Azimuth is measured clockwise from true north (90° = east, 270° = west). Computed for 2026; values change by less than a degree from year to year.
Golden hour & blue hour by month
Summits catch first and last light — alpenglow can turn rock pink or orange minutes before sunrise and after sunset while valleys stay in shadow.
| Month (15th) | Blue hour starts | Sunrise | Golden hour ends | Golden hour starts | Sunset | Blue hour ends | Daylight |
|---|---|---|---|---|---|---|---|
| January | 6:52 AM | 7:21 AM | 8:00 AM | 4:35 PM | 5:14 PM | 5:43 PM | 9h 54m |
| February | 6:30 AM | 6:57 AM | 7:33 AM | 5:12 PM | 5:48 PM | 6:14 PM | 10h 51m |
| March | 6:53 AM | 7:19 AM | 7:54 AM | 6:41 PM | 7:15 PM | 7:41 PM | 11h 56m |
| April | 6:07 AM | 6:34 AM | 7:08 AM | 7:08 PM | 7:42 PM | 8:09 PM | 13h 09m |
| May | 5:31 AM | 6:00 AM | 6:37 AM | 7:32 PM | 8:09 PM | 8:38 PM | 14h 09m |
| June | 5:17 AM | 5:48 AM | 6:26 AM | 7:51 PM | 8:30 PM | 9:01 PM | 14h 42m |
| July | 5:30 AM | 6:00 AM | 6:38 AM | 7:50 PM | 8:28 PM | 8:58 PM | 14h 28m |
| August | 5:57 AM | 6:25 AM | 7:00 AM | 7:25 PM | 8:01 PM | 8:28 PM | 13h 36m |
| September | 6:24 AM | 6:50 AM | 7:25 AM | 6:42 PM | 7:17 PM | 7:43 PM | 12h 26m |
| October | 6:50 AM | 7:16 AM | 7:51 AM | 5:57 PM | 6:32 PM | 6:58 PM | 11h 16m |
| November | 6:19 AM | 6:47 AM | 7:25 AM | 4:21 PM | 4:59 PM | 5:26 PM | 10h 12m |
| December | 6:46 AM | 7:15 AM | 7:55 AM | 4:12 PM | 4:52 PM | 5:21 PM | 9h 38m |
Local time (America/Los Angeles), including daylight saving time. Golden hour runs from about −4° to +6° solar altitude, so the morning golden hour begins during blue hour, before sunrise.
Milky Way & night sky
From Loma Prieta, the Milky Way core is visible in a dark sky from March through October. June gives the longest window (about 5.5 hours on a moonless night), and the core peaks around 24° above the southern horizon. Our light-pollution model puts the sky at about Bortle 5 (suburban sky), so expect visible sky glow; drive away from towns for better results.
| Month | Core visible (15th) | Hours | Max altitude | Direction |
|---|---|---|---|---|
| January | Below 10° in darkness | — | 0° | — |
| February | 5:05 AM – 5:25 AM | 0.3 | 14° | SE → SE |
| March | 4:11 AM – 5:41 AM | 1.5 | 20° | SE → SSE |
| April | 2:04 AM – 4:54 AM | 2.8 | 24° | SE → S |
| May | 12:12 AM – 4:12 AM | 4.0 | 24° | SE → SSW |
| June | 10:21 PM – 3:51 AM | 5.5 | 24° | SE → SW |
| July | 10:15 PM – 2:25 AM | 4.2 | 24° | SSE → SW |
| August | 9:36 PM – 12:26 AM | 2.8 | 24° | S → SW |
| September | 8:44 PM – 10:24 PM | 1.7 | 21° | SSW → SW |
| October | 7:58 PM – 8:28 PM | 0.5 | 14° | SW → SW |
| November | Below 10° in darkness | — | 1° | — |
| December | Below 10° in darkness | — | -19° | — |
Window when the galactic core is at least 10° high during astronomical darkness on the 15th of each month. Pick nights within a few days of the new moon. Plan exact nights with the Milky Way planner.
Estimated sky darkness: 5 Bortle 5 — Suburban sky. The Milky Way is weak near the horizon and washed out overhead; long exposures pick up a sky glow. Modeled zenith brightness ≈ 19.74 mag/arcsec².
Weather & best season
Long-term NASA satellite data for this area show July as the clearest month (about 12% average cloud cover) and January as the cloudiest (54%). July is the warmest month and December the coldest, which matters for gear, snow access and how long batteries last at night.
Average cloud cover (%)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| High °F | 74 | 77 | 85 | 95 | 108 | 110 | 116 | 113 | 114 | 103 | 89 | 71 |
| Low °F | 22 | 27 | 29 | 32 | 39 | 43 | 49 | 50 | 46 | 38 | 27 | 24 |
| Precip. (in) | 2.9 | 3.1 | 2.4 | 1.3 | 0.5 | 0.1 | 0.0 | 0.0 | 0.1 | 0.8 | 1.7 | 3.6 |
Monthly climatology for the surrounding 1° grid cell from NASA POWER (MERRA-2). Mountain sites can be colder and cloudier than the cell average.
Photography tips for this mountain peak
- Photograph the peak from a lake, meadow or ridge at sunrise when the face that looks east lights up first.
- Long lenses compress ridgelines; shoot the peak from several miles away to make it look massive.
- Afternoon thunderstorms are common in summer at high elevations — plan summit hikes for early morning.
- Snow on the summit holds detail best when you expose for the highlights and lift shadows later.
- Shoot RAW to keep the most latitude for high-contrast sunrise and sunset scenes.
Season: Early summer keeps snow on the peaks with green valleys below; autumn adds aspen or larch color in many ranges.
Suggested gear: Telephoto lens, Lightweight tripod, Warm layers, Microspikes in shoulder seasons. Work out exposures with the depth of field, ND filter and NPF rule calculators.
Nearby photo spots
Other locations within 25 km of Loma Prieta, closest first.
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Scenic Viewpoint
Mountain PeakWaterfallFAQ
When is the best time to photograph Loma Prieta?
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How far is Loma Prieta from Day Valley?
Sources
Location data: Wikidata, USGS GNIS / GeoNames, Wikipedia. Sun, moon and Milky Way times are computed by LWPhoto Atlas for 2026. Climate: NASA POWER. Sky darkness is a population-based estimate (Walker's law), not a measurement. See data sources & licenses.